What do long shots, medium shots and close up shots mean in relation to each other?
In relation to each other, the scene reveals more context and setting the further from the subject and more emotion the closer to the subject, specifically their face. An extreme long shot can show the location and context and is an establishing shot. A long shot establishes the subject of the scene and a bit less of the setting. The full shot shows the entire subject from head to toe. A medium shot is close enough to show facial expressions but also far enough to show a lot of the actor's body language. A close up more intimately shows the subject and can add more emotion via the talent's acting and facials. The extreme close up can effectively illustrate some subtler details in the face.